Two California wildfires — one north of San Francisco and the other south of Sacramento — cover over 100,000 acres and have forced nearly 6,000 people to evacuate their homes.

On Sunday, California Governor Jerry Brown declared a state of emergency for Lake and Napa counties due to how fast the fire in Lake County, Calif., was spreading. The fire, in an area north of San Francisco, started on Saturday afternoon and now covers over 40,000 acres. It has forced over 3,000 people to evacuate their homes, according to Cal Fire.

ABC News in San Francisco reports that the fire originally covered 50 acres but it grew to over 40,000 acres within 12 hours.

Four firefighters who were battling the blaze have been hospitalized with second-degree burns. It’s unknown how many homes and schools have been damaged at this time.

A second fire, near Sacramento, in Butte, started on Wednesday and has burned over 65,000 acres. More than 4,000 firefighters have been working to contain the fire. It has forced 2,700 people to evacuate their homes since Wednesday.

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